[time-nuts] AM Broadcast stations as a frequency reference...

paul swed paulswedb at gmail.com
Fri Oct 14 08:22:18 EDT 2011


Thank you now I have some closer targets to look at.

On Thu, Oct 13, 2011 at 11:51 PM, Charles P. Steinmetz <
charles_steinmetz at lavabit.com> wrote:

> Paul wrote:
>
>  Curious if anyone knows of central or eastern US stations that would be
>> gps locked.
>>
>
> I believe the following are:
>
> 710     WOR     New York
> 810     WGY     Schenectady*
> 860     CJBC    Toronto*
> 880     WCBS    New York
> 960     WELI    New Haven
> 1000    WMVP    Chicago*
> 1030    WBZ     Boston
> 1060    KYW     Philadelphia*
> 1140    WRVA    Richmond*
> 1180    WHAM    Rochester
>
> Note that the synthesizer used to generate the carrier from the GPS source
> may not have a resolution of exactly 1.000000 Hz, so some of the GPS-locked
> stations are off nominal by one or two tenths of a Hz.  The stations with
> asterisks above are examples.  Also, note that atmospheric effects
> phase-modulate the skywave path, so expect as much as +/- 0.5 Hz wander
> (usually less) on DX carriers at night.  Finally, the stations will not
> always be running with GPS discipline (during maintenance, failures, etc.).
>
>
> Best regards,
>
> Charles
>
>
>
>
>
>
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